You can install and remove packages as and when you want to, and you can choose whether to install free or non-free software on your system.

你可以随心所欲的安装或者移除软件包，选择在你的系统上安装自由软件还是非自由软件。

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It 'says that non - free software is a suboptimal solution.

它说非自由软件是一种次最优的解决方式。

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For the free software movement, however, non-free software is a social problem, and the solution is to stop using it and move to free software.

FORBES: Free Versus Open: Does Open Source Software Matter In The Cloud Era?

It says that non-free software is an inferior solution to the practical problem at hand.

FORBES: Free Versus Open: Does Open Source Software Matter In The Cloud Era?

But now, GreenPrint is offering a free version of the software for non-business use, supported by advertising.

CNN: Software saves trees, cash and headaches, says creator